Blind-stop.



J. A. HEDBERG.

BLIND STOP.

APPLICATION FILED FEB. 19. 1910.

975,423. Patented Nov. 15, 1910.

2% M CW 1 ICE.

JAKOIB AUGUST HEDBERG, 0F GOTTENBORG, SWEDEN.

BLIND-STOP.

Application filed February 19, 1910.

Specification of Letters Patent.

Serial No. 544,878.

To all whom it may concern:

Be it known that I, JAKOB AUGUST HED- BERG, a subject of the King ofSweden, and

resident of Odinplatsen 3, Gottenborg, in'

the Kingdom of Sweden, have invented certain new and useful Improvementsin Blind- Stops, of which the following is a specification, referencebeing had therein to the accompanying drawing.

This invention relates to an operating device for window blinds 2'. e.means, whereby the ribs of the blind can be turned into any desiredinclined position and held in the same.

The said means consist of a rotatable disk connected with the top lathof the blind and acted upon by a braking device. The said disk can berotated by means of a chain, a cord or the like in opposite directionsand to the necessary positions.

In the accompanying drawing Figure 1 is a front view and partly alongitudinal section of the device. Fig. 2 is a section on the line w-mof Fig. 1, and Fig. 3 is a side view of the device, one of the end wallsor the cover of the casing being removed.

The operating device consists of a circular disk 2, located in a casing1 and journaled with its hub 3 in the end wall 4: and the cover 5 of thesaid casing 1. The said disk 2 is provided in its periphery with agroove 6, in which a chain 7, cord or the like is mounted, the saidchain being fixed to the disk 2 in any suitable manner. The ends of thechain 7 pass through an opening in the side wall of the casing 1 andover guide rollers 8, 8 journaled on a pin 9 and a screw pin 10respectively fixed in lugs 11 projecting from the end wall a, the cover5 and the side wall of the casing 1. 12 is a ringshaped distance piecelocated on the screw pin 1-0. From the rollers 8, 8 the chain 7 passesfreely downward. The hub 3 has a square opening, into which the squareend pin 13 of the top lath 14 of the blind is inserted. 15 is one of theribbons supporting the ribs 16 of the blind in the well known manner.Consequently, by pulling on the one part or the other of the chain 7 thedisk 2 with the pin 13 and the top lath 14 will be rotated, so that theribs 16 can be turned into any desired inclined position.

In order that the disk 2 may be held in any position without the chain 7being made fast, it is provided with a braking device of suitableconstruction. According to the drawing the said braking deviceconsistsof a cylindrical part 17 of the disk 2 around which a brake-band 18 islocated. The ends of the said band are connected by a screw bolt 19 anda nut 20, so that the band can be suitably tightened. The ends of theband project through an opening in the side wall of the casing 1, theband being thus prevented from rotating with the disk 2. Owing to thedescribed arrangement the disk 2 is evidently locked in any desiredposition.

Any suitable breaking device may be used but the one described is verysimple and adapted to its purpose.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a blind stop, in combination with the top lath of the blind, adisk connected with the said lath and journaled in station ary brackets,a braking device surrounding said disk, and means for rotating the saiddisk, substantially as described and for the purpose set forth.

2. In a blind stop, in combination with the top lath of the blind, adisk connected with said lath and journaled in stationary brackets, afriction braking device acting gpen said disk, and means for rotatingsaid 3. In a blind stop, in combination with the top lath of the blind,a rotatable disk connected with said lath, said disk being provided witha smooth periphery, a friction braking device acting upon saidperiphery, and means for rotating said disk.

4. In a blind stop, in combination with the top lath of the blind, adisk connected with said lath, and journaled in brackets, a brakingdevice acting upon said disk, means for varying the braking effectthereof and means for rotating same disk.

5. In a blind stop, in combination with the top lath of the blind, acircular disk, which is journaled in a stationary casing and the hub ofwhich has a preferably square opening, the end pin of the said lath,inserted into the said opening, a groove provided in the periphery ofthe said disk, a chain or the like located in the said groove and fixedto the disk, a cylindrical surface provided on the disk, a brake-bandinclosing the said surface, means connecting the ends of the said band,and means for pre- Pa'tented Nov. 15, 1910.

. venting the band from rotating with the disk, substantially asdescribed and for the purpose set forth.

6. In a blind stop, in combination With the top lath of the blind, acircular disk, Which is journaled in a stationary casing and the hub ofwhich has a preferably square opening, the end pin of the said lath,inserted into the said opening, a groove provided in the periphery ofthe said disk, a chain or the like located in the said groove and fixedto the disk, guide rollers for the said chain, a cylindrical surfaceprovided on the disk, a brake-band inclosing the said surface, a screwbolt, With nut connecting 15 the ends of the said band, and an openingin the said casing through which the ends of theband project.

In Witness whereof, I have hereunto signed my name in the presence oft'Wosub- 20 scribing Witnesses.

JAKOB AUGUST HEDBERG.

Witnesses ROBERT APELGREN, HEDWIG MELINDER.

